Radiator terminology: lockshield valves
Some basic central heating questions:
* Whats the difference between a "lockshield" valve and a thermostatic control valve -- the ones with numbers 1 to 10, say, which you turn to control individual radiator temp. * Thermostatic control valves -- should they be turned clockwise to reduce radiator temp, anti-clockwise to increase radiator temp? Is there a standard direction in which they operate? Bruce |
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Set Square wrote:
There are actually 3 variations - but 2 of them share many common parts. Standard manual valves and lockshield valves are the same animal but with different plastic tops. Manual valves have a knob which you can turn - like a tap - to open and close them. Lockshield valves have a cover over the end of the spindle which doesn't rotate it. These are for balancing the system, are turned with a spanner, and then fitted with their tamper-proof cover to prevent the setting being changed. To the extent that sometimes when you buy a lockshield valve you actually get the valve with two alternate plastic tops. One that engages with the valve and acts as a knob - turning it into a conventional radiator valve, the other that is just a cover for use in "lockshield mode". -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
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